101 lines
1.7 KiB
C++
101 lines
1.7 KiB
C++
/* Copyright (C) Microsoft Corporation, 1998. All rights reserved. */
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#include "precomp.h"
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#include "utils.h"
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LPSTR My_strdup ( LPCSTR pszSrc )
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{
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LPSTR pszDst = NULL;
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if (NULL != pszSrc)
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{
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UINT cch = ::strlen(pszSrc) + 1;
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if (NULL != (pszDst = new char[cch]))
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{
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::CopyMemory(pszDst, pszSrc, cch);
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}
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}
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return pszDst;
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}
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const LPSTR c_apszKeywords[] =
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{
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"ANY",
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"AUTOMATIC",
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"BEGIN",
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"BIT",
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"BMPString",
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"BY",
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"CHOICE",
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"COMPONENT",
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"CONSTRAINED",
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"DEFINITIONS",
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"END",
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"FROM",
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"IDENTIFIER",
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"IMPORTS",
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"INTEGER",
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"IV8",
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"NULL",
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"OBJECT",
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"OCTET",
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"OPTIONAL",
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"SEQUENCE",
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"SIZE",
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"STRING",
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"SYNTAX",
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"TAGS",
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"WITH",
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};
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BOOL IsKeyword ( LPSTR pszSymbol )
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{
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return (BOOL) BinarySearch_Str(pszSymbol, &c_apszKeywords[0], ARRAY_SIZE(c_apszKeywords));
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}
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LPSTR BinarySearch_Str ( LPSTR pszKey, const LPSTR aKeyTbl[], UINT cKeys )
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{
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UINT lo = 0;
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UINT hi = cKeys - 1;
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UINT num = cKeys;
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UINT mid, half;
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int result;
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while (lo <= hi)
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{
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if (0 != (half = num >> 1))
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{
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mid = lo + ((num - 1) >> 1);
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if (0 == (result = ::strcmp(pszKey, aKeyTbl[mid])))
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{
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return aKeyTbl[mid];
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}
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else if (result < 0)
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{
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hi = mid - 1;
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num = (num - 1) >> 1;
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}
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else
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{
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lo = mid + 1;
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num = half;
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}
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}
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else if (num)
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{
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return (::strcmp(pszKey, aKeyTbl[lo]) ? NULL : aKeyTbl[lo]);
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}
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else
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{
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break;
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}
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}
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return NULL;
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}
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